APA (7th ed.) Citation

Hay, M. (1973). Languages for adults / (by) Michael Hay. Longman.

Chicago Style (17th ed.) Citation

Hay, Michael. Languages for Adults / (by) Michael Hay. (Harlow): Longman, 1973.

MLA (9th ed.) Citation

Hay, Michael. Languages for Adults / (by) Michael Hay. Longman, 1973.

Warning: These citations may not always be 100% accurate.